基于在线测量的可分离分数顺序系统的强大的多创新全参数识别
Junwei Wang1, Xudong Shi1, Weili Xiong1
1School of Internet of Things Engineering, Jiangnan University, Wuxi 214122, China.
ISA transactions
|February 14, 2026
概括
本研究引入了一个在线框架,用于在分数顺序系统中进行可靠的参数估计,有效地实时处理异常值. 新方法同时估计系统参数和差异顺序,克服现有离线技术的局限性.
科学领域:
- 控制系统工程 控制系统工程
- 非线性动力学是一种非线性动力学.
- 信号处理 信号处理
背景情况:
- 在分数顺序系统中估计参数和差异顺序是复杂的,特别是在异常值损坏的数据中.
- 现有的强大的主要组件分析方法是离线的,这限制了它们在实时应用中的使用.
研究的目的:
- 为分数顺序系统开发一个在线可靠的参数估计框架.
- 为了能够同时实时检测异常值和适应性参数估计.
主要方法:
- 将异常值检测转换为通过在线信息矩阵恢复的西尔维斯特方程解决的矩阵分解问题.
- 纳入了多重创新策略和一个移动窗口机制,以有效地利用数据和实时更新.
- 衍生出一个强大的多创新梯度基代 (RMIGI) 算法,用于同时进行全参数估计.
主要成果:
- 拟议的框架成功地在线实时检测异常值和估计参数.
- 在蒙特卡洛模拟和电路案例研究中,RMIGI算法展示了有效性和优越性.
- 理论分析证实了RMIGI方法的趋同,并描述了它的计算复杂性.
结论:
- 开发的在线强大的参数估计框架适用于涉及小数顺序系统的实时应用.
- 在异常值存在的情况下,RMIGI算法对现有的离线方法进行参数识别提供了显著的进步.
- 这项工作为在具有挑战性的测量条件下准确识别系统提供了强大而高效的解决方案.
相关概念视频
Multi-input and Multi-variable systems
430
Cruise control systems in cars are designed as multi-input systems to maintain a driver's desired speed while compensating for external disturbances such as changes in terrain. The block diagram for a cruise control system typically includes two main inputs: the desired speed set by the driver and any external disturbances, such as the incline of the road. By adjusting the engine throttle, the system maintains the vehicle's speed as close to the desired value as possible.
In the absence of...
In the absence of...
430
Wave Parameters
9.4K
The simplest mechanical waves are associated with simple harmonic motion and repeat themselves for several cycles. These simple harmonic waves can be modeled using a combination of sine and cosine functions. Consider a simplified surface water wave that moves across the water's surface. Unlike complex ocean waves, in surface water waves, water moves vertically, oscillating up and down, whereas the disturbance of the wave moves horizontally through the medium. If a seagull is floating on the...
9.4K
Subcellular Fractionation
9.0K
The homogenate obtained after cell lysis contains various membrane-bound organelles that can be further separated into pure fractions by subcellular fractionation. These isolates are used to study specific cellular components, analyze localized protein activity, and are even employed in diagnostics. Fractionation is typically achieved using centrifugation methods, the most common being density-gradient and differential centrifugation.
Differential Centrifugation
Differential centrifugation is...
Differential Centrifugation
Differential centrifugation is...
9.0K
Partial Fractions
233
A partial fraction is a component of a rational expression represented as the sum of simpler fractions. When a rational function is expressed as a ratio of two polynomials, it can often be decomposed into a sum of fractions whose denominators are simpler polynomials, typically linear or irreducible quadratic factors. This process is called partial fraction decomposition, and it is used to simplify complex expressions for integration, solving equations, or analysis.Partial fraction decomposition...
233
Second Order systems II
414
In an underdamped second-order system, where the damping ratio ζ is between 0 and 1, a unit-step input results in a transfer function that, when transformed using the inverse Laplace method, reveals the output response. The output exhibits a damped sinusoidal oscillation, and the difference between the input and output is termed the error signal. This error signal also demonstrates damped oscillatory behavior. Eventually, as the system reaches a steady state, the error diminishes to zero.
414
First Order Systems
438
First-order systems, such as RC circuits, are foundational in understanding dynamic systems due to their straightforward input-output relationship. Analyzing their responses to different input functions under zero initial conditions reveals significant insights into system behavior.
When a first-order system is subjected to a unit-step input, its response is characterized by its transfer function. By applying the Laplace transform of the unit-step input to the transfer function, expanding the...
When a first-order system is subjected to a unit-step input, its response is characterized by its transfer function. By applying the Laplace transform of the unit-step input to the transfer function, expanding the...
438


